All you must talk about is the personal experience, your past, and how your skills will benefit the business overall. Talk about your Digital Marketing story that helped you learn a lot of things and how this knowledge could help the business.

Focus on your unique abilities. Talk about how you are different from the rest of the applicants. In crux, talk in terms of skills, knowledge, and experience you have got so far.

The question that you should really be answering is what value will you contribute as part of the team.